package day03;

public class IfElseDemo {
    public static void main(String[] args) {

        double price = 600.0;
        if(price >=500){
            price *=0.8;
        }else {
            price*=0.9;
        }
        System.out.println(price);


        //判断成绩合法还是不合法
        int score = 500;
        if(score >=0 && score<=100){
            System.out.println("成绩合法");
        }else {
            System.out.println("不合法");
        }


    }
}
